Logitech M720 Triathlon Wireless Mouse, 1000 DPI Optical Sensor, 8 Buttons, Hyper-Fast Scrolling, Bluetooth & Unifying Receiver, Up to 24 Months Battery Life, Black, 1 Year Warranty

Sensor Technology: High Precision Optical Tracking DPI: 1000 DPI Buttons: 8 Scroll Wheel: Hyper-Fast Scrolling Wheel Tilt Wheel: Yes (with Middle Click) Wireless Technology: Bluetooth, 2.4GHz Wireless Wireless Receiver: Logitech Unifying Receiver Battery: 1 x AA (Included) Battery Life: Up to 24 months Connectivity: Bluetooth, Wireless Color: Black 1 Year Warranty